A material including a continuous aqueous phase and a dispersed phase in the form of droplets containing an amphiphilic lipid and a surfactant having the following formula (I): (L1-X1&mdashH1&mdashY1)v-G-(Y2&mdashH2&mdashX2-L2)w &emsp&emsp(I), wherein: L1 and L2 independently represent lipophilic groups, X1, X2, Y1, Y2 and G independently represent a linking group, H1 and H2 independently represent hydrophilic groups including a polyalkoxylated chain, v and w are independently an integer from 1 to 8, wherein the droplets of the dispersed phase are covalently bonded by the surfactant having the formula (I). The invention also relating to the method for preparing the same and to the uses thereof.
